On April 4, 2018 at 13:00 UTC, the private U.S. unmanned supply spacecraft, the "Dragon” SpX-14 (CRS-14 flight), was successfully docked to the International Space Station. The linkup operation was carried out with the help of the giant 17-meter Canadarm. The capture with Canadarm-2 was performed by Japanese astronaut Norishige Kanai and American astronaut Scott Tingle at 10:40 UTC. The Dragon spacecraft was maneuvered into position and attached to a berthing port on the space station's Harmony module by ground controllers in Houston and Canada. This docking marked the 14th time a Dragon spaceship has reached the space station, counting a demonstration flight in 2012. It is the second flight of the same Dragon’s capsule. The same capsule was used during SpaceX CRS-8 mission.

On April 2, 2018 at 20:30 UTC the "Falcon 9” rocket-carrier was launched from SLC-40 of the Cape Canaveral Air Force Station, Florida, USA. The launch was performed by the "SpaceX” private company supported by the 45th Space Wing of US Air Force. US private company SpaceX launched its "Dragon” (CRS-14 flight also known as SpX-14) unmanned spacecraft on a cargo resupply mission to the International Space Station. CRS means Commercial Resupply Services. It is the 15th successful flight of a “Dragon” spacecraft and the 14th successful flight of a “Dragon” to the ISS.

On April 2, 2018 at 00:16 UTC, the Chinese “Tiangong-1” space station re-entered Earth’s atmosphere over the southern Pacific Ocean. The most of “Tiangong-1” was expected to burn up during re-entry. The mission control center in Beijing monitored the space station’s descent. The Russian 821st Main Space Intelligence Centre as well as United States Space Surveillance Network also monitored the space station’s descent.

The registered letter was sent from the Post office which situated not far from the Russian 821st Main Space Intelligence Centre. Total 56 such registered letters were sent at that day.

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